| 发明名称 |
Diaphragm for speaker, speaker using the diaphragm, and system using the speaker |
| 摘要 |
A loudspeaker diaphragm contains polylactic acid, and bamboo charcoal mixed in the polylactic acid. The diaphragm does not affect environment and provides a loudspeaker with high sound quality. |
| 申请公布号 |
US8406452(B2) |
申请公布日期 |
2013.03.26 |
| 申请号 |
US20080602017 |
申请日期 |
2008.07.08 |
| 申请人 |
KAJIHARA YOSHIMICHI;NISHIMURA KAZUAKI;SHINKODA HIROSHI;PANASONIC CORPORATION |
发明人 |
KAJIHARA YOSHIMICHI;NISHIMURA KAZUAKI;SHINKODA HIROSHI |
| 分类号 |
H04R11/02 |
主分类号 |
H04R11/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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